Belly, the protagonist of Jenny Han's The Summer I Turned Pretty series, officially ends up with Conrad Fisher. Their relationship is a central theme throughout the books, and despite their ups and downs, they ultimately find their way back to each other.
The series follows Belly's summer romances with both Conrad and his brother, Jeremiah. While Belly and Jeremiah have a sweet and fun-loving relationship, Conrad and Belly's connection is more intense and passionate. Throughout the series, Belly grapples with her feelings for both brothers, eventually realizing that her true love lies with Conrad.
The series culminates in The Last Summer, where Belly and Conrad finally acknowledge their feelings for each other and commit to a relationship.